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The last update we had on the Easton TVS1740 based positive displacement supercharger kit for the S65 V8 in the E9X M3 was back in September with a small teaser video showing the hardware running on an M3. This is a difficult project and to date there is no positive displacement based supercharger kit available for the E9X M3 as they are all based on a centrifugal blower. BimmerBoost is glad to see progress has been made along with some preliminary power figures being released at 5.5 psi of boost.

BimmerBoost of course has to ask, why was it only run to 7000 rpm on the dyno? What is the power figure at redline? Why was a dyno graph not shown? Clearly these are details that will all come but all questions BimmerBoost members will no doubt be asking.

This a very difficult project to tune for due to the independent throttle bodies but it seems Harrop has developed a solution involved an electronic blow off valve to bleed boost so air is not forced onto the throttle bodies when they are closed.

There is still work to be done but this kit is coming along nicely and will be quite different in its power delivery to anything else currently on the market.